Full Idea
Because our perceptual states typically represent the world as seen from a perspective, it is sometimes thought that some distinctively indexical kind of content is needed to characterise those states.
Gist of Idea
It is assumed that indexical content is needed to represent the perspective of perception
Source
Cappelen,H/Dever,Josh (The Inessential Indexical [2013], 01.4)
Book Reference
Cappelen,H/Dever,J: 'The Inessential Indexical' [OUP 2013], p.12
A Reaction
They are summarising this view precisely so that they can oppose it, and I think they are right.